Refrigerating and ice-making apparatus.



W. PPLEIDERER & W. W. HARRIS. REFEIGERATING AND ICE MAKING APPARATUS. APPLIQATION TILED 1m 11, 1909.

953,972, Patented Apr. 5, 1910,

4 BHSBTB-SKEET 1.

W. PFLEIDERBR & W. W. HARRIS. BEFBIGERATING AND 1GB MAKING APPARATUS.

4 SHBETSSKEET 2.

.In van/Zora 9 M M APPLICATION FILED KAY 11, 1909. 953,972. Pateuted Apr. 5, 1910 77117226 5595; Fi 8 Fig z/% j),

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W. PFLEIDERER 5: W. W. HARRIS. BBFBIGBRATING AND ICE MAKING APYAEATUS. APYLIOATION FILED MAY 11,1909.

g??? C2 $21M Patented Apr. 5, 1910.

Eve nZors W. PPLEIDERER & W. W. HARRIS. BEFRIGEBATING AND 10E MAKING APPARATUS.

I APPLIUATION TILED MAY 11. 190B.

Panenpeq Apr. 5, 1910 4 SHEETS-SHEET 4 UNITED STAillQS 'Iu rENT OFFICE.

WALTER PFLEIDEREB AND WILLIAM WALLINGTON HARRIS, F PETERBOBOUGH, ENGLAND; SAID HARRIS ASSIGNOR TO SAID PFLEIDERER.

REFRIGERATING AND ICE-MAKING APPARATUS.

Specification of Letters Patent.

Patented Apr. 5, 1910.

Application filed May 11, 1909. Serial No. 485,254.

To at! whom may concern:

Be it known that we, WALTER Prnnrnannn and WILLIAM W'ALmNoToN HARRIS, subjects of the Kin of Great Britain and Ireland, residing at Vestwood Works, Peterborough, in the count of lfiortham ton, England, have invents new and usefu Im rovements Relating to Refrigerating and ce-Malring Apparatus, of w ich the following 18 a specification. v

This invention relates to refrigerating and ice making apparatus of the absorption type, and has for its object more especially to construct at small cost an apparatus of the said type that shall be efiicient and convenient in service and particularly adapted for household or domestic use.

The invention comprises the adaptation of a tubular element with or without heating and cooling chambers at its 'ends and the arrangement of said element in combination with a cooling tank, a beating medium, and other essential and known parts, i the two end rtions of the ifi p ctively serve for the sepv H I "ydrous gas from the solution and the evgpo auen of the liquefied gas to p i odu'cie'; the required refrigerating or fie trttec ntr l p lftl l V the 1ne1it, i8 midi? serve for the condensation of thef'sepaiietd is and the ge -absor tion 'o'fthe' af'sby thew iter or absorbing me ium.

e i'rillg'fq thefoui' accompanying sheets yf tp'li e b 'ygflrawings= 1 is a art-sectional.side'elevation, 1 a plan esp r vatlon of One forfiir' of refrigerating a mi "l isQ'B a Part 'ditional en paratus constrnp'ted'in accordance with t s invention. Fi 4' to: .9. inclusive are dia rammatie sillustrating theaction of t e, up )arai Fig l Q is a diagrammatic side e evatloiishowin a 'nllltij tnbnlarconstruction of the fo rgn o apparatus shown at Figs, 1 to 3. .Figs. 11 an 12, are respectively end elevationhn d plan of a modified form of the reir'gerating. ooil provided with enlargeinlints-fgt 'i; entreinities, WhllQFlgS; 13 and 'Ie' sect1on l, 'elevati0n and plan of a ddiiiediiorm or thesa-id enlargement. Flg. fi'Fisasid e elevtion and F1 16 a plan of jo't-lier modified shape o e coil, while Hand 18 illustrate two furthermodr i A i The same referenceletters in the d lferent gyviews indicate the same orsimilar parts.

portion a (hereinafter tonne pair of radial of the coil.

to t e opposite end I) (hereinafter termed reheating end) while the central part c of the tube is made to as ira'l or equivalent shape. The shape of t e coil, which is clearly shown in the drawings, includes 0. arts d e forming with the peripheral [)OljtlOllS of the coil pockets f g. The heating end I) coincides with the axis u If desired a suitable heating chamherma-y be formed with or provided on such end. A lamp or oil burner It or other heatin device is arranged at the heat ing end I; 0% the tubular element while the opposite end of the latter rojects into an ice mold i, a refrigerating liox, brine bath,

or other equivalent part of the apparatus.

A cooling or condensing tank 7' is'arranged between'the ends of the heating and refrigerating portions of the tubular element, and

so that the lower half of the spiral or like central portion of the said element is immersed 1n the water contained by the tank. 35 The extremity of the heating end of the tubular element may be provided with a handle 1: whereb the element can be rotated. If desire on suitabie mechanical means-may be rovi-ed for automatically rotatin the cor *t. the desired intervals. Normally the occu ies the position showrrat Figs 1' to 3. \ghen the gas is to be separated from the solution containedin the heating end b'of the tubular element, the lamp or other heating medium h is applied to such end; when the gas separates out from the solution it passes up the radial portion a of the s iral and descends .around the periphery of t 1e spiral to the lower ortion Z immersed in the water in the thp j, where the cooling and condensation 0' the gas is efl'ected. Gravitation of the sol tion from the part b to the lower part I o the spiral or cooler is prevented by the" radial part e. At the conclusion of the scpara'- tion process the lamp or heating device is removed or extinguished an the 001i first rotated through a semicircle in the direction of the arrow Fig. 3,to. the position liquor in tl iefheating end b flows during such rotation from the partbjinto the pocket g new immersed in the cooling tank. 3i; .--n ni'ltancously the condensed as flows around the periphery of the cm into the pocket 1. The absorbent or weak liqu'or does not, therefore, pass into contactvwith the separated and condensed as, the two being kept quite separate as s own. The rotation is then continued throu h the remainder of the revolution into Elie position shown at Figs. 6 and 7, and the liquefied gas is thereby caused to flow from the ocket f i along the radial part (1 into them rigerating end a of the appara'tuawlhe absorbent or weak liquor meanwhile flotvhihto the part Z of the coil. and remains immersed in the coolingtank. The effect to reduce the pressurewithin the coil, whereupon the liquid aminonia or otherflrefrig erant in the refrigerating end a is evaporated and a' return flow set up toward the heatiiig'end. During such return flow the gas must pass through thewater or other absorbing medium in the part] of the coil and thereby become reabsorbed. Rotation of the "coil in the opposite direction to that above described brings back the liquid into the art 6. Figs 8 and 9 show the coil with the iquid returned to the ori in'al position. Any water or other absorbing medium which may have been distilled over during heatin and left in the refri eratin end of the CO1 after reabsorption of the re rigerating medium can be returned to the end I) by further rotation of the coil.

We find it is not necessary to effect the heating of the apparatus immediately prior to the puttingiof the same into operation, as within reasonable limits it may be heated at any time and allowed to stand unaffected until refrigeration is re uired. It is'then only necessary to rotate t e tubular part as aforesaid to start the evaporation of the previously liquefied gas. i

To insure the efficient absor'tion of-the as during the evaporation an return flow %10111 the end a as afioresaid, the tubular element is preferably -r'estricted onfiattened at the part Z which is then at the bottom of tl1c.coil. ..A small quantity of liquid then serves to prevent the gas from escaping out of one part of the coil" to another without abso tion, and better absorption is obtainddib .the more efieetiveagitation of the liqui i l Instead of constructing the coil from a single tube as-shown in the efgrin. of aparatus 'hereinbefore' descrlb ,;multi p e tubesha ing .a central ortion: e. as shown at Fig. may beemp oyed, the ends "be: ing respeetivel connected to common cham here a and 'bwhich serve the shme pur- 65 poses as the corresponding parts above-re shown at 'I'lie.. water or weak re ed to,

u enlarged ends a "and" as shownat F figures also show a coil of lmodified shae, both ends a to the coil andtbe diiferent position re atively to the contract ed part Z between its ends, with two or more tion bei of the tubular element ma an enlarged extremity m;( igs 13 and 14) in the form of an extended shallow receptncle for the liq frigeratin tained Wi said form of apparatus embodied in the construction of refrigeratmg and icemaking plant adaptedQtofniefl varying ing end arrzuwed in a parallel with t 1e coil, the manner of using the coil being .scribed.

the ends pro'ectin tubular n em 17 and 18. In Fig. 17 the ends a project tangentially. to the coil and the ends 4 or- 'the liquid;

he coil ls-inclosed by-a tank i Heat is su plied to the ot i er va or is driven the'liq'ui condition On rotatin arrow to br1 fied gas runs liquor runs into the re the coil. non of the gas ,brin s the end 6. p on 'abracket n. 18 the. gas is driven 19.. end" directly intd-Tt he refrigerat' a, the gas be through the. portion 'offthe the tank 7". A the direction of'tfiaj degrees the We g of the tnbe, the liriuefied W51 i Figs.

y y. "ilff miy he meant for rotation n J g'onveiient way. o accommodate a largerouan ity of hi 1d han they) tia tubulav an; a coil with Z) lriayfbe adopted figs; 1 1 and ittf "Phantoms and b being dis osed radia 1y ortions 2 and e in a of the coil from that shown from tead of a single tubewith a sin 1e boil the tube may the 'same as part to another. refii crating end-a For. some services the p e fitted with uefied gas. .A uniform re effect over a large rareagis obthis device.

bath i i-indicated by it. not limited-to the aforebut can 'be readily The ice mold or The inventlon is services or requirements.

Qrmod convolutions, the 0 era; above describe ,eicept ng t at a corresponding number of rotations are required to o the 00 g 18 once of liquid from one efiiect the trans-fer- Figs. 15 and 16 Sho a coil with thelieatg horizontal position similar-to that above de- Instead of a coiled tdbnlar member ers Siaped as shown at igs. and b g? of the boil form PQ ketS.

and the ammonia or ofi' and collected in in th'e end-or pocket the coil the end a verticahthe liquemto the end a The pa h h n t e orm s 9W9. heat appiied tfi' pptm u in. t th ongh ninety r ws intofithe part he. ..7;,and gri'oraa h the 69 5 I ioo axially we may cm by "g I in the direction of the we. l

' tained by the element and the evaporation ada' ted to serve both for the condensation of liquefied gas, and having its central part of t e separated gas and the reabsorption of the gas evaporated after liquefaction, said element being also rotatably mounted and so constructed that by rotation the separated fluids can be moved from the parts of the element they occupy after separation to other parts of the element without intermixin and a cooling tank in conjunction with t e central part of the element.

2. Refrigerating and ice making ap aratus consisting in part ofmultiple tu ular elements, a chamber connected to one set of adjacent ends of the'elements to serve for the separation of gas from solution containe by the elements, and a. chamber connecte to the opposite setof adjacent ends of the elements to serve for the evaporation of liquefied gas, the central parts of the elements being adapted for use both in the condensation of the separated gas and the reabsorption of the gas evaporated after liquefaction, said elements being also rotatably mountedand so constructed that by rotation the separated fluids can be moved from the parts of the elements the occup; after the elements without intermixing, and a cooling tank in conjunction with the central part of the elements.

3. In refrigeratin and ice making apparatus, a rotatable tu ular element. consisting of end portions which respectively serve for the separation of gas from a contained solution and the evaporation of liquefied gas and a coiled portion between its ends which serves both of the condensation of the separated gas and the re-absorption of the gas evaporated after liquefaction and the cooling tank in conjunction with sald uollcd portion, substantially as described.

4. In refrigerating and ice making apparatus, a rotatable tubular clement consisting of a coiled portion. radial portions connnunicating with the extremities of the coiled portion, end portions communicating with the inner extremities of the radial portions and a cooling tank in conjunction with the coiled portion, substantiallyas described.

,5. In refrigeratin and ice making apparatus, a rotatable tubular element consisting of a coiled portion, radial ortions communicating with the extremities of the coiled portion, a horizontal heating end portion communicating with the inner extremity of one of the radial portions and a radiallydisposed refrigerating end portion communicatin with the inner extremity of the other radia portion .and a cooling tank in conjunction with the coiled portion, substantially as described.

6. In refrigerating and ice making apparatus, the combination comprising a rotatable tubular element consisting of a coiledportion which is constricted in a part of its periphery, radial portions communicating with the extremities of the coiled ort-ion and.end portions communicating with the inner extremities of the radial portions, and a cooling. tank in conjunction with the coiled portion of the element, substantially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing Witnesses.

WALTER PFLEIDEREB.

WILLIAM WALLIRGTON HARRIS.

Witnesses:

Binmmm H. MATTHEWS, W. G. B. BOWLING. 

